As a nail enthusiast, I have suffered from nail infections on both of my big toes for years, which was painful, but luckily with BREYLEE Nail Treatment Serum Pen, I have seen great results! I have been using the product for about a month now and am very happy with the results. Its a slow process but you will get results.Debra Smyl, 28, Rochester, New York Nail fungus, or onychomycosis is caused by a fungal infection that can be transmitted through direct contact with an infected person or object. The most common fungal species that cause nail fungus are dermatophytes, which thrive in warm and moist environments, such as shoes and socks. Other factors that increase the risk of developing nail fungus include: As the infection progresses, the nail may become thick and brittle, making it difficult to trim. In severe cases, the nail may separate from the nail bed, causing pain and discomfort. Other symptoms of nail fungus include: Getting rid of nail fungus can be a challenging process, but BREYLEE Nail Treatment Serum Pen is here to help. Package Includes: 1 x BREYLEE Nail Treatment Serum Pen